test/browser-esm-partial.html

<!DOCTYPE html>
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<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <script src="lib/dat.gui.min.js"></script>
        <link rel="stylesheet" href="lib/reset.css" />
    </head>
    <body>
        <style>
            body {
                background: #eee;
                margin: 0;
                text-align: center;
            }
            #main {
                box-sizing: border-box;
                margin: 0 auto;
                width: 800px;
                max-width: 100%;
                text-align: center;
            }
            .chart {
                height: 400px;
                border-radius: 5px;
                margin: 20px 0;
                box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
                background: #fff;
            }
        </style>



        <div id="main">
            <h1>Tests ESM lib files importing in browser partially</h1>
        </div>

        <script type="importmap">
            {
                "imports": {
                    "echarts/": "../",
                    "zrender/": "../node_modules/zrender/",
                    "tslib": "../node_modules/tslib/tslib.es6.js"
                }
            }
        </script>
        <script>
            if (typeof process === 'undefined' || !process.env) {
                window.process = {
                    env: {
                        NODE_ENV: 'development'
                    }
                };
            }
        </script>

        <script type="module">
            import * as echarts from 'echarts/core.js';
            import { PieChart } from 'echarts/charts.js';
            import { CanvasRenderer } from 'echarts/renderers.js';
            echarts.use([PieChart, CanvasRenderer])

            const chartsOptions = [{
                series: [{
                    type: 'pie',
                    data: [{
                        name: 'A',
                        value: 5
                    }, {
                        name: 'B',
                        value: 3
                    }, {
                        name: 'C',
                        value: 1
                    }]
                }]
            }]
            const charts = [];
            chartsOptions.forEach(function (chartOption) {
                const dom = document.createElement('div');
                dom.className = 'chart';
                document.querySelector('#main').appendChild(dom);

                const chart = echarts.init(dom);

                chart.setOption(chartOption);
            });
        </script>
    </body>
</html>